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From Flashcardlet > Cardiorespiratory System > Flashcards

Cardiorespiratory System Flashcards

1
Q

A system of the body composed of the cardiovascular and respiratory systems

A

Cardiorespiratory System

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2
Q

These systems work together to provide the body with adequate oxygen and nutrients and to remove waste products such as co2 from cells in the body.

A

Cardiovascular and respiratory systems

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3
Q

A system of the body composed of the heart, blood, and blood vessels.

A

Cardiovascular system

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4
Q

A hollow muscular organ that pumps a circulation of blood through the body by means of rhythmic contraction

A

Heart

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5
Q

The space in the chest btw the lungs that contains all the internal organs of the chest except the lungs.

A

Mediastinum

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6
Q

One of the three major types of muscle, involuntary, contains myofibrils and sarcomeres aligned side by side

A

Cardiac muscle

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7
Q

A specialized area of cardiac tissue, located in the right atrium of the heart, which initiates the electrical impulses that determine the heart rate; often termed the pacemaker for the heart.

A

Sinoatrial (SA) Node

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8
Q

A small mass of specialized cardiac muscle fibers, located in the wall of the right atrium of the heart, that receives heartbeat impulses from the sinoatrial node and directs them to the walls of the ventricles.

A

Atrioventricular (AV) Node

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9
Q

The side of the heart that is referred to as he pulmonic side bc it receives blood from the body that is low in O2 and high in CO2 and pumps it to the lungs then back to the other side.

A

The right side

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10
Q

This side of the heart is referred to as the systemic side bc it pumps blood high in O2 and low in CO2 to the rest of the body.

A

The left side

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11
Q

The superior chamber of the heart that receives blood from the veins and forces it into the ventricles

A

Atrium

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12
Q

The inferior chamber of the heart that receives blood from its corresponding atrium and, in turn, forces blood into the arteries.

A

Ventricles

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13
Q

Which ventricle has thicker walls and why?

A

The left. Because it pumps under high presure bc it pumps blood out to the rest of the body, whereas the right side only has to pump a short distance, to the lungs.

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14
Q

The amount of blood pumped out of the heart with each contraction.

A

Stroke volume

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15
Q

The rate at which the heart pumps

A

Heart rate

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16
Q

Heart rate x stroke volume, the overall performance of the heart.

A

Cardiac output

17
Q

Fluid that circulates in the heart, arteries, capillaries, and veins, carries nutrients and oxygen to all pats of the body, and also rids the body of waste products.

A

Blood

18
Q

What are the three kinds of cells in the blood?

A

Red blood cells, white blood cells, and platelets.

19
Q

These blood cells carry oxygen from the lungs throughout the body.

A

Red blood cells

20
Q

These blood cells help fight infection.

A

White blood cells

21
Q

These blood cells help with clotting.

A

Platelets

22
Q

What percentage of the blood is plasma?

A

55% plasma

45% blood cells

23
Q

Network of hollow tubes that circulates blood throughout the body

A

Blood vessels

24
Q

Vessels that transport blood away from the heart

A

Arteries

25
Q

The smallest blood vessels, and the site of exchange of chemicals and water between the blood and tissues.

A

Capillaries

26
Q

Vessels that transport blood from the capillaries toward the heart.

A

Veins

27
Q

Small terminal branches of an artery, which end in capillaries.

A

Arterioles

28
Q

What is the largest artery in the body?

A

Aorta

29
Q

The very small veins that connect capillaries to the larger veins.

A

Venules

30
Q

In what four functions does blood play a role in transportation?

A
  1. Transports oxygen and nutrients to tissues
  2. Transports waste products from tissues
  3. Transports hormones to organs and tissues
  4. Carries heat throughout body
31
Q

In what role does blood play in regulation?

A

Regulates body temp and acid balance in the body

32
Q

What 2 roles does blood play in protection?

A
  1. Protects the body from excessive bleeding by clotting

2. Contains specialized immune cells to help fight disease and sickness

From Flashcardlet (22 decks)

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